Won a programming contest using D - Thank you for the tool!

deadalnix via Digitalmars-d digitalmars-d at puremagic.com
Tue Aug 19 22:52:27 PDT 2014


On Monday, 18 August 2014 at 18:04:50 UTC, Ali Çehreli wrote:
> On 08/18/2014 03:11 AM, Ivan Kazmenko wrote:
>
> > my program usually hit an out-of-memory error very soon.  It
> > worked fine when compiled with 64-bit DMD but failed to
> collect
> > the garbage in time with 32-bit DMD and with recent LDC.
>
> That sounds like a false pointer issue. D's current GC is 
> conservative: It takes any value that could be a pointer as a 
> pointer and persists the memory that is falsely being pointed 
> at.
>
> The problem becomes 2^^32 times less likely when pointers are 
> 64-bit wide.
>
> Ali

http://www.deadalnix.me/2012/03/05/impact-of-64bits-vs-32bits-when-using-non-precise-gc/


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